【Purpose/significance】In order to study the status of Chinese international papers in Library &Information science in the 21 st century.【Method/process】Taking the database of Web of Science(SSCI、SCI-E) during 2001-2016 as the data source, the article comprehensively uses the index and method of Scientific Metrology and social network analysis techniques combing the quality and the quantity to the following aspects: year distribution, cooperation model, source journals,research topics with keywords co-occurrence network.【Result/conclusion】The result shows that intensified multi-person cooperation is the main thrust of the quadratic term growth trend of scientific research output in this field; the influence of different international cooperation regions and authors’ scale shows uneven development.